<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible=true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolesList" border stripe row-key="id">
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id+'onlyone'"
              :class="['bdbottom',i1===0? 'bdtop':'','vcenter']">
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <el-col :span="19">
                <!-- 通过 for 循环 嵌套渲染二级权限 -->
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id+'-only'">
                  <el-col :span="5">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row,item2.id)"
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="19">
                    <el-tag
                      type="warning"
                      v-for="(item3) in item2.children"
                      :key="'new'+item3.id"
                      closable
                      @close="removeRightById(scope.row,item3.id)"
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{scope.row}}</pre> -->
          </template>
        </el-table-column>

        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName" width="400px"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row)">编辑</el-button>
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeId(scope.row)">删除</el-button>
            <el-button
              type="warning"
              size="mini"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
            >分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限的弹窗 -->
    <el-dialog title="分配权限" :visible.sync="setRightdialogVisible" width="50%"  @close="setRightDialogClosed">
      <!-- 树形控件 -->
     <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightdialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
     <!-- 编辑角色的对话框 -->
    <el-dialog title="编辑角色" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <!-- 添加参数的对话框 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
        <el-form-item label="角色名称:" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述:">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editParams">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加角色的对话框 -->
    <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 添加参数的对话框 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
        <el-form-item label="角色名称:" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述:">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoles">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data() {
    return {
      //权限列表
      rolesList: [],
      setRightdialogVisible: false, //控制分配权限弹窗的显示与影藏
      rightsList: [], //所有权限的数据
      //树形控件的属性绑定对象
      treeProps:{
        label:'authName',
         children: 'children',
      },
      defKeys:[],//默认选择的节点id值数组
       roleId:'',//即将分配权限的id
       RoleId:'',//即将编辑的角色id
       editDialogVisible:false,//编辑角色是否显示和影藏
       addDialogVisible:false,//添加角色是否显示和影藏
       editForm:{}, // 修改的表单数据对象
       addForm:{roleName:''},//添加角色表单
        // 修改表单的验证规则对象
      editFormRules: { roleName: [ { required: true, message: '请输入参数名称', trigger: 'blur' }]},
      addFormRules: { roleName: [ { required: true, message: '请输入参数名称', trigger: 'blur' }]},

    }
  },
  created() {
    //获取所有的权限
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get('roles/')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolesList = res.data
      // console.log(this.rolesList)
    },
    // 添加角色
  async addRoles(){
    this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
          const { data: res } = await this.$http.post(`roles`,{roleName:this.addForm.roleName,roleDesc:this.addForm.roleDesc})
      if (res.meta.status !== 201) {
        return this.$message.error('获取角色列表失败')
      }
      this.$message.success('添加角色成功！')
      this.getRolesList()
      this.addDialogVisible=false
    })
    },
    addDialogClosed(){
       this.$refs.addFormRef.resetFields()
    },
    // 重置修改的表单
    editDialogClosed(){
       this.$refs.editFormRef.resetFields()
    },
     async showEditDialog (role){
     this.RoleId= role.id
       const { data: res } = await this.$http.get(`roles/${role.id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.editForm = res.data
       this.editDialogVisible = true
    },
   async editParams(){
     this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
      const{data:res} = await this.$http.put(`roles/${this.RoleId}`,{roleName:this.editForm.roleName ,roleDesc:this.editForm.roleDesc})
      if (res.meta.status !== 200) {
          return this.$message.error('编辑角色失败！')
        }
        this.$message.success('编辑角色成功！')
        this.getRolesList()
        this.editDialogVisible = false 
   })
    },
  
  async  removeId(role){
       const confirmResult = await this.$confirm(
        '此操作将永久删除该参数, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      // 用户取消了删除的操作
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除！')
      }
      const{data:res}=await this.$http.delete(`roles/${role.id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除参数失败！')
      }
      this.$message.success('删除参数成功！')
      this.getRolesList()
    },
    //根据id删除对应的权限
    async removeRightById(role, rightId) {
      // 弹框提示是否要删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('用户取消了删除')
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )

      if (res.meta.status !== 200) {
        return this.$message.error('删除权限失败！')
      }
      // this.getRolesList()
      role.children = res.data
    },
    //展示分配权限的对话框
    async showSetRightDialog(role) {
       this.roleId = role.id
      //获取所有权限的数据
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200) {
        return this.$message.error('获取权限失败！')
      }
      //把获取到的权限的数据保存到data中
      this.rightsList = res.data
      // console.log(this.rightsList);
      // 递归获取三级节点的Id
      this.getdefKeys(role,this.defKeys)
      this.setRightdialogVisible = true
    },
     // 通过递归的形式，获取角色下所有三级权限的id，并保存到 defKeys 数组中
    getdefKeys(node,arr){
      if(!node.children){
         // 如果当前 node 节点不包含 children 属性，则是三级节点
        return arr.push(node.id)
      }
      node.children.forEach(item => this.getdefKeys(item, arr))

    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed(){
      this.defKeys=[]
    },
    // 点击为角色分配权限
async allotRights() {
const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),//获取到需要分配的权限的全选id值
        ...this.$refs.treeRef.getHalfCheckedKeys()//获取到需要分配的权限的半选id值
      ]
      const idStr = keys.join(',')//以，将获取到的id值拼接
// console.log(typeof  idStr);//string

      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('分配权限失败！')
      }

      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
},
  }
}
</script>

<style scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}

.bdbottom {
  border-bottom: 1px solid #eee;
}

.vcenter {
  display: flex;
  align-items: center;
}
.el-table_1_column_3 .el-table__expand-icon.el-icon-arrow-right::before {
 visibility: hidden!important;
 
}
</style>